The one piece FS adapter, essentially a reducing ferrule, is recommended for use in fittings where the ferrule
will not be removed. Connections are made and disconnected by loosening the fitting nut and sliding the tube out.

One piece fused silica adapters are available in Valcon polyimide and virgin polyimide for use up to 350°C and in PEEK for
lower temperature applications (up to 175°C).

Valcon polyimide is a unique graphite-reinforced composite, specially prepared to maximize mechanical stability at high
temperatures. Small blocks are subjected to extreme loads by a process known as hot isostatic pressing, with individual
ferrules subsequently machined from these blocks. The result of this two-step process is a fused silica adapter with
high temperature stability which far exceeds that of parts produced by conventional molding.

Note: The determining factor in selecting an adapter is the fused silica tubing's outer diameter, or OD.

TECH TIPS

If a fused silica tube breaks off in a through-type union, remove the nuts and the tube opposite the
broken one. Clear the fitting by passing a drill or wire of the appropriate diameter into the unbroken
side and through the center of the fitting.